I am new to this forum and have a 4wd question / issue. We had a snowstorm last week and I put the vehicle into 4wd, drove and shifted fine. Shifted out when 4wd was no longer needed and parked the truck.
The next morning the following lights were flashing, and still are, 4wd icon and Lo icon. ABS and brake lights are on steady.
Other than that it drives and responds fine. Will not shift into 4wd.

What do I need to due to fix this? Oh, and it is well over for an oil change! Not sure if that matters.

Thank you folks!
Russell

You seriously expect these brats to actually read the owner's manual? Easy fix: You engage 4wd for the first time in a year and a taser come out of the dash and gives a full force jolt for 30 seconds.

I followed NorCal 4Runner's instructions and swapped the the two vacuum hoses. Now the 4 x 4 light stays on and the 4 x 4 works when it is selected and doesn't when it is diselected. Before there was just a click or two and the light flickered; no 4 x 4. Should I asume the machic accidental mixed them up? He left several vacuum hoses off and minor nuts and bolts here and there (no I won't be using him again).

A good tip is to always actuate the 4wd system a couple times a month this helps them not get stuck

Check the vacuum valve. Remove the valve apply 12 volts if you can hear a click it’s working also blow threw it with 12 volts applies if you can pass air threw then they are good if not replace. It’s possible that they are mixed up

COULD YOU POST A Picture of the vacuum valve, i hv a pal with this problem

I have a 2001 4Runner 3rd gen. 173,000 miles. All services and maintenance up-to-date. It operates great. After about a week, I started it up on a flat surface, pushed the "4WD" button on the shifter, and then drove slowly forward. As a result, I have the same issue as noted above in this thread above; the "blinking CDL and 4WD" icon light, and then all the others. I looked underneath and found the black rubber hose disconnected from the front center differential actuator housing. Then, I looked closer, and I found a slightly frayed wire on one of the actuator sensor's. I looked over everything and fixed what was needed.

So here is the BEST part of this story! I tried to fix the blinking light issue and I never could find the cause. I had to take into a local Toyota (stealership) Dealer. (Yes, they will try to screw us over every time. It's true.) They're like politicians.

The Toyota Dealer's service department here in Williamsburg, Va. has officially kidnapped my 2001 Toyota for a month now. For a month! All for a blinking light problem. (I contacted Toyota corporate but I doubt I will get action on a 2001 Toyota. I was even thinking about buying a new Toyota soon. Not now.)

I am a very patient and reasonable person having worked in Emergency Medicine ER's for years which helps to strengthen a person's character to deal calmly with such situations. I am getting close to

Mind you, I can, and did work on my Toyota extensively before taking it into the dealer. When I showed them pictures and videos of what I had all done they didn't care, or listen to me.

They told me initially: 1) We're not sure what it is after having the truck for several weeks. 2) We found "metal shavings" in your transfer case (me: that's weird, as I never had any issues with my gearing or drive-ability) and we'll have to replace it. {I got screwed here! } 3) After the getting a rebuilt transfer case they told me, " still not finding the problem". The mechanic thinks it is the " Skid control module". We're gonna have to find one.

People, friends, this is a legitimate, officially franchised "Toyota" branded "Dealership". WTF. (I will be sending all my photos and recordings to the corporate office when this is over. Yeah, I know. They will file it in the "TRASH" bin file) I will be making an awesome You-Tube video about this debacle!

So, here it is almost one month later to the day. I know we are all in a Covid lock-down but this service by the Toyota dealer here in Williamsburg, Virginia, is so insanely BAD!!! HINT!: They should have named their dealership "Massey's".

Newby here I just got a 2007 v6 4runner a few days ago. When I switch to 4h the lights just flash and it does not appear to engauge. I tried 4l, stopped shift to netural then to 4l and it flashed a beeped. If I lock the center diff when in 4H both lights (green&yellow) stop flashing and the VCS light comes on. It however does not feel like it is in 4 wheel drive. I did not have a owners manual yet its on order. Help Thanks Rick.